Four-Stroke Engine Theory Phenomena-Based Lesson: Otto Cycle Valve Overlap and Inertial Column Gas Scavenging Dynamics Presentation | Small Gas Engine | Grades 9–12

This is the student-facing slide presentation that introduces the phenomenon, walks the class through observations and driving questions, and frames the evidence students will use for the Phenomena-Based Lesson in the Small Gas Engine (grades 9–12) chapter Four-Stroke Engine Theory, built around the phenomenon Otto Cycle Valve Overlap and Inertial Column Gas Scavenging Dynamics. It is sold separately from the other two parts of the set.

• What's inside: Student Slide Show (editable .pptx + PDF, 23 slides).
• Resource type: Phenomena-Based Lesson – Presentation. Format: editable Microsoft PowerPoint file plus a ready-to-print PDF.

Classroom use: Open with the phenomenon slide show, let students record ideas on the response sheet, and lead the discussion with the teacher guide. Built for Small Gas Engine, grades 9–12.

Sample question“Why are both the intake and exhaust valves held open simultaneously at top dead center when an engine completes its four strokes?”

Complete the set: Four-Stroke Engine Theory Phenomena-Based Lesson: Otto Cycle Valve Overlap and Inertial Column Gas Scavenging Dynamics Teacher Discussion Guide; Four-Stroke Engine Theory Phenomena-Based Lesson: Otto Cycle Valve Overlap and Inertial Column Gas Scavenging Dynamics Student Response Sheet. Scaffolded version: Four-Stroke Engine Theory Scaffolded Phenomena-Based Lesson: Otto Cycle Valve Overlap and Inertial Column Gas Scavenging Dynamics Presentation.